Fix selection of language alias in spellcheck menu

When there were several aliases for a given language (e.g., due to
symlinked dictionaries), previously, the first of these aliases was
always selected. However, this did not necessarily correspond to the
alias the user selected (e.g., in the preferences).

src/TeXDocumentWindow.cpp

@@ -487,9 +487,9 @@ void TeXDocumentWindow::setSpellcheckLanguage(const QString& lang)
 
 	if (menuSpelling) {
 		QAction *chosen = menuSpelling->actions()[0]; // default is None
-		foreach (QAction *act, menuSpelling->actions()) {
+		foreach(QString alias, langAliases) {
 			bool found = false;
-			foreach(QString alias, langAliases) {
+			foreach (QAction *act, menuSpelling->actions()) {
 				if (act->text() == alias || act->text().contains(QString::fromLatin1("(%1)").arg(alias))) {
 					chosen = act;
 					found = true;